Fix usage text for AGI recieve text (bug #4948)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6334 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_agi.c

@@ -1380,7 +1380,7 @@ static char usage_recvchar[] =
 " -1 only on error/hangup.\n";
 
 static char usage_recvtext[] =
-" Usage: RECEIVE CHAR <timeout>\n"
+" Usage: RECEIVE TEXT <timeout>\n"
 "	Receives a string of text on a channel. Specify timeout to be the\n"
 " maximum time to wait for input in milliseconds, or 0 for infinite. Most channels\n"
 " do not support the reception of text. Returns -1 for failure or 1 for success, and the string in parentheses.\n";